An analogy: It's the difference between cooking the meal myself, and ordering from a buffet. No matter how great the selection, it's still cooked the way they like it, not the way I like it.
I think a Windows 8 PC provides the better compromise: I have Metro apps for Netflix, TuneIn, ESPN, etc etc with more coming all the time. With a click of the button, I'm in Centrafuse (or RR or Driveline if you prefer) and I have the full carPC experience. I was hesitant about that concept of operation before, but like PhilG and others, I find myself using it more and more often. And I think this is WHY Win8 is built the way it is: for those that want something a little more than what iOS or Android has to offer at this point.
I agree, plus when I do get my "Surface Pro" I can go from vehicle to vehicle and instead of rebuilds, updates etc. with four rides. I only have to do this once. And bring it in my home to do this and not worry about scumbag thieves.
I think I may be selling all
my 4 carpc builds once I get my tablet/PC.